Slump64 is a C64 emulator built from the VICE 1.13 distribution with some modifications.

First: the VIC-II palette is extended to 144 colors (16 x 9). Initially all 9 groups are set to the default 16 colors. Old/new VIC-II colors setting is ignored, the default palette is always based on new colors.

Second: when drawing sprites, each sprite number uses a different 16 colors palette. So background uses colors from 0 to 15, sprite 0 colors from 16 to 31, sprite 1 colors from 32 to 47, and so on.

Third: VICE is modified to read 144 colors palette files.

In order to play games using more than the usual 16 colors a palette file needs to be made, and normally a palette that is good for one game is not good for another. The reason is that each game uses sprites differently, for example in Pitfall II the bat has always the same sprite number, whereas in most games sprites are multiplexed and assigned to enemies dynamically.

Download modified sources, binary for Windows and games palettes here.

The complete sources and the other files needed to run Slump64 can be downloaded from the VICE site.

To build Slump64, the source files contained in the downloadable archive must replace the corresponding files in the Vice distribution.

How to:

Install Slump64:

• Install unmodified Vice.
• Copy Slump64.exe where x64.exe is located.
• Copy palette files (slump_*.vpl) where the other palette files are located.

Run Slump64:

• Double click on Slump64.exe.
• Load the palette file for the game you want to play.
• Load and launch the game as you would do with unmodified Vice.

Make new palette files:

• Discover how the game uses sprites (palette slump_detect_sprites.vpl may help).
• Copy slump_default.vpl to slump_your_game.vpl
• Modify the colors you want with a text editor.
• If the result is good, email it to me! senbei<at>microarcade<dot>net